I have iredmail installed and I just created a new subdomein for a domain. In my existing Vhost I added the subdomain.The problem I have is that he always redirects to roundcube and makes the link https://b2b.domain.com/mail

I have iredmail installed and I just created a new subdomein for a domain. In my existing Vhost I added the subdomain.The problem I have is that he always redirects to roundcube and makes the link https://b2b.domain.com/mail